I found these. Are they any good?
http://www.airsoftmegastore.com/6487-dboys...-bi-mx-14b.aspx
http://www.airsoftmegastore.com/2504-src-c...504sr4-ris.aspx
http://www.airsoftmegastore.com/2502-src-c...4-tactical.aspx
http://www.airsoftmegastore.com/2864-390-f...nk-pr-m4a1.aspx
http://www.airsoftmegastore.com/2852-a-and...fm-7799blk.aspx
http://www.airsoftmegastore.com/2862-420-f...nk-pr-lr16.aspx
http://www.airsoftmegastore.com/8356-m4-s-...gm-7799odg.aspx
http://www.airsoftmegastore.com/1862-urban...e-jg-0449a.aspx

Been looking at guns to buy and I cant decide what is the best. I am going to playing field and they put a limit at 400fps. Looking to pay around $150 give or take. What are the best brands and the best place to buy it? Please recommend what you think I should get?
The place I will be playing at is Hollywood Sports in case you what to check out the rules or anything.